evdi-sys 0.3.1

Low level bindings for evdi
Documentation 
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/* SPDX-License-Identifier: GPL-2.0-only
 * evdi_cursor.h
 *
 * Copyright (c) 2016 The Chromium OS Authors
 * Copyright (c) 2016 - 2020 DisplayLink (UK) Ltd.
 *
 * This program is free software; you can redistribute  it and/or modify it
 * under  the terms of  the GNU General  Public License as published by the
 * Free Software Foundation;  either version 2 of the  License, or (at your
 * option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef _EVDI_CURSOR_H_
#define _EVDI_CURSOR_H_

#include <linux/version.h>
#include <linux/module.h>
#if KERNEL_VERSION(5, 5, 0) <= LINUX_VERSION_CODE || defined(EL8)
#else
#include <drm/drmP.h>
#endif
#include <drm/drm_crtc.h>

struct evdi_cursor;
struct evdi_framebuffer;
struct evdi_gem_object;

int evdi_cursor_init(struct evdi_cursor **cursor);
void evdi_cursor_free(struct evdi_cursor *cursor);
void evdi_cursor_lock(struct evdi_cursor *cursor);
void evdi_cursor_unlock(struct evdi_cursor *cursor);
bool evdi_cursor_enabled(struct evdi_cursor *cursor);
void evdi_cursor_enable(struct evdi_cursor *cursor, bool enabled);
void evdi_cursor_set(struct evdi_cursor *cursor,
		     struct evdi_gem_object *obj,
		     uint32_t width, uint32_t height,
		     int32_t hot_x, int32_t hot_y,
		     uint32_t pixel_format, uint32_t stride);

void evdi_cursor_move(struct evdi_cursor *cursor, int32_t x, int32_t y);
void evdi_cursor_position(struct evdi_cursor *cursor, int32_t *x, int32_t *y);
void evdi_cursor_hotpoint(struct evdi_cursor *cursor,
			  int32_t *hot_x, int32_t *hot_y);
void evdi_cursor_size(struct evdi_cursor *cursor,
		      uint32_t *width, uint32_t *height);
void evdi_cursor_format(struct evdi_cursor *cursor, uint32_t *format);
void evdi_cursor_stride(struct evdi_cursor *cursor, uint32_t *stride);
struct evdi_gem_object *evdi_cursor_gem(struct evdi_cursor *cursor);

int evdi_cursor_compose_and_copy(struct evdi_cursor *cursor,
				 struct evdi_framebuffer *efb,
				 char __user *buffer,
				 int buf_byte_stride);
#endif